Fig. 4: Schematic diagram of ocean’s biological carbon pump and climate change during ancient hyperthermals. | Nature Communications

Fig. 4: Schematic diagram of ocean’s biological carbon pump and climate change during ancient hyperthermals.

From: Microbial metabolism amplified warming in three Phanerozoic hyperthermal events

Fig. 4: Schematic diagram of ocean’s biological carbon pump and climate change during ancient hyperthermals.The alternative text for this image may have been generated using AI.

a Ocean’s biological carbon pump processes during the pre-CIE phase. b A potential reduction in carbon sequestration by biological carbon pump serves as positive feedback to global warming triggered by massive carbon emission. CIE carbon isotope excursion; DIC dissolved inorganic carbon; POC particulate organic carbon.

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